Abstract: Large numbers of dark laminae occur in the core samples of Bashijiqike formation in Bozi area of Kuqa depression in Tarim basin. Taking Well Bz102 as an example, this paper studies the development characteristics of the dark laminae and the impacts on the reservoir by using core samples, thin sections, heavy minerals and imaging logging data, and develops the high?resolution imaging logging model for recognizing the dark laminae. Study shows that the dak laminar in Bozi area are mainly resulted from magnetite enrichment due to nearby provenance. The existence of dark laminae decreases the porosity and permeability of the reservoir. In Well Bz102, 169 dark laminated layers have been recognized, and 75% of perforated intervals in test located in the intensive sections of dark laminae. So, the decrease of vertically connecting ability of the reservoir could be an important factor of low productivity in this well